added some Heilongjiang districts from shapefiles (source: maplibrary.org):
黑龙江省 / Heilongjiang

鹤岗 / Hegang
佳木 / Jiamusi
大兴安岭地区 / Daxing'anling
七台河 / Qitaihe
双鸭山市 / Shuangyashan and
鸡西市 / Jixi